Going to work had a totally different meaning now. My boss changed my roster to allow him to have regular sessions. On Tuesdays and Thursday I didn’t start work till 1pm but would finish about 8pm. Once everyone had left the building it gave him a good 2 hours to play and teach me. My family got used to the new routine and never questioned. So even though I still had all the fun of some discrete flirting, twice a week I would have some long sessions and on the other days I would have to be satisfied with some naughty touching and the occasional surprise quickie. 

After my disastrous attempt at sucking cock he devised a training plan. I had always had a strong gag reflex so he had to teach me how to breathe differently. He had a side desk in his office which had adjustable height and lay a yoga mat for me to lie on my back. He would pull me back till my head hung over the edge and then tell me to open my mouth. This gave him a good angle to slide his cock into my throat. He would stroke my neck and talk quietly telling me to relax and slow breath thru my nose. 

At first I could only last very short periods, perhaps a 10 seconds and I would start to gag and he would pull out and let me gain my breathe, then he would slide back down my throat for me to try again. Even after the first session he timed me at 30 seconds and I was rewarded with him going down to make me climax again.

The second session was much harder, as he pushed deep into my throat and then slowly slide back and forward, but again my gag reflex let me down as I would start to cough. But after a few attempts he was able to slide back and forward with me following his lead and relaxing.

Each session became easier, by the end of three weeks the boss was able to fuck deep into my throat for a few minutes at a time. With just a few minutes rest in between. I gained confidence with each session and he had me practice at home putting a mouth ball gag on so my mouth was wide open but then deep breathing through my nose. Would have been very hard to explain if any family had walked in.

It became a common practice for boss to seek me out privately at work. Perhaps a store cupboard or lunchtime when everyone was out, and he would have me sit and present his cock for perhaps just 3-5 minutes of deep throat sucking. 

I was getting better and better and I knew it made him happy.